1. (verb) speak unfavorably about

• badmouth
• drag through the mud
• traduce

2. (adjective) having or exerting a malignant influence

• evil
• malefic
• malevolent

1. (verb) speak unfavorably about

• asperse
• besmirch
• calumniate
• defame
• denigrate
• slander
• smear
• smirch
• sully

1. (adjective) evil or harmful in nature or influence

• cancerous

2. (adjective) having or exerting a malignant influence

• maleficent

1. (adjective) evil or harmful in nature or influence

• harmful
• maleficent
• unkind

1. (verb) speak unfavorably about

• backbiter
• backbiter
• defamer
• defamer
• libeler
• libeler
• maligner
• maligner
• slanderer
• slanderer
• traducer
• traducer
• vilifier
• vilifier
• calumniation
• calumny
• defamation
• hatchet job
• obloquy
• traducement
• malignment
• smear
• vilification

2. (adjective) having or exerting a malignant influence

• malevolence
• malevolence
• malevolency
• malevolency
• malice
• malice
• malignance
• malignancy
• malignity

1. (adjective) evil or harmful in nature or influence

• benign
• benignant